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Inventory Inventory (Summary of Land-related Charges) (Details) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Inventory Disclosure [Abstract]        
Land impairments $ 0 $ 88 $ 5,386 $ 88
Net realizable value adjustments (NRV) - land held for sale 142 1,227 152 1,289
Write-offs of deposits and pre-acquisition costs 2,311 2,516 6,643 5,433
Total land-related charges $ 2,453 $ 3,831 $ 12,181 $ 6,810